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mr Goodwill [35]
3 years ago
14

Which number is irrational? A: √9 B: √8 C: 0.3333 D: 2/3 Answer fast please

Mathematics
1 answer:
Arisa [49]3 years ago
5 0

\sqrt{8} is an irrational number ⇒ answer B

Step-by-step explanation:

Let us explain the meaning of:

  • A rational number is a number that can be written as a fraction
  • An irrational number is a number that cannot be expressed as a fraction

Examples:

Rational numbers : 10 , \frac{2}{5} , 0.333

Irrational numbers : π , √8 , ∛25 , (2 + √5) , \frac{\sqrt{7}}{3}

∵ \sqrt{9}=3

∵ 3 is a rational number

∴ \sqrt{9} is a rational number

∵ \sqrt{8}

∵ There is no square root of 8

∴ \sqrt{8} is an irrational number

∵ 0.3333 can be expressed as \frac{3333}{10000}

∴ 0.3333 is a rational number

∵ \frac{2}{3} is a fraction

∵ All fractions are rational numbers

∴ \frac{2}{3} is a rational number

\sqrt{8} is an irrational number

Learn more:

You can learn more about real numbers in brainly.com/question/4853862

#LearnwithBrainly

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Answer:

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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200$ fee for psychic - 187.5$ earned

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Answer:

45

Step-by-step explanation:

AEF is a similar triangle to ABC. that means it has the same angles, and the sides (and all other lines in the triangle) are scaled from the ABC length to the AEF length by the same factor f.

now, what is f ?

we know this from the relation of AC to FA.

FA = 12 mm

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so, going from AC to FA we multiply AC by f so that

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all other sides, heights, ... if ABC translate to their smaller counterparts in AEF by that multiplication with f (= 3/10).

the area of a triangle is

baseline × height / 2

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and because of the similarity we don't need to calculate the side and height in absolute numbers. we can use the relative sizes by referring to the original dimensions and the scaling factor f.

baseline small = baseline large × f

height small = height large × f

we know that

baseline large × height large / 2 = 500

baseline large × height large = 1000

aAEF = baseline small × height small / 2 =

= baseline large × f × height large × f / 2 =

= baseline large × height large × f² / 2 =

= 1000 × f² / 2 = 500 × f² = 500 ×(3/10)² =

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Answer:

Step-by-step explanation:

5/12

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